S
M
T
W
T
F
S
26
86°
76°
27
89°
74°
28
88°
72°
29
88°
73°
30
89°
72°
31
88°
74°
1
89°
75°
2
90°
72°
3
89°
73°
4
91°
76°
5
92°
74°
6
90°
74°
7
88°
73°
8
89°
74°
9
91°
73°
10
91°
73°
11
90°
74°
12
90°
75°
13
88°
72°
14
89°
73°
15
90°
73°
16
91°
74°
17
89°
74°
18
90°
73°
19
90°
75°
20
91°
73°
21
89°
73°
22
89°
74°
23
90°
73°
24
91°
74°
25
89°
73°
26
90°
73°
27
89°
74°
28
90°
74°
29
90°
73°
30
87°
74°
31
87°
74°
1
88°
73°
2
87°
73°
3
86°
72°
4
86°
74°
5
87°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Slidell
Slidell's August 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 72° and 76°. The average high for August is 89° with an average low of 74°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Slidell. See also: September | October | November.
